From a 6 cm long cuboid, cut off a cube with a volume of 64 cubic centimeters. What is the original surface area of the cuboid? To be specific, add the number! OK?

From a 6 cm long cuboid, cut off a cube with a volume of 64 cubic centimeters. What is the original surface area of the cuboid? To be specific, add the number! OK?

The ground of cube is square, and the cut cube is 64 cubic centimeters
It is known that the side length of the square on the ground is 4 cm, and the other side length is 6 cm, so the surface area is 4 * 4 * 2 + 4 * 6 * 4 = 128 square cm